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Thomson's Discovery of Electrons

Cathode rays ...

Question

Cathode rays get deflected in an electric field towards____________.

A

positive plate

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B

negative plate

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C

no deflection takes place

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D

none of these

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Solution

The correct option is B positive plate
Cathode rays are beam of electrons, thus they are negatively charged. Hence on applying electric field, they get deflected towards the positive plate. Thus correct answer is option A.

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